21781059 Compatible Volvo FMX D13K Water Pump

What does a water pump do?

This water pump serves as a critical component within the engine cooling system, responsible for circulating coolant between the engine and the radiator. By maintaining consistent flow, it prevents overheating and ensures optimal operating temperatures for heavy-duty engines under high thermal loads.

Compatible Volvo FMX and FM models

This specific part is engineered for Volvo FMX models featuring the D13K engine, including variants such as the 370, 410, 430, 450, and 330. It is also compatible with several Volvo FM models, including the FM 330, FM 370, FM 410, and FM 450. This component is essential for maintaining the thermal stability of these heavy commercial vehicle engines.

Installation and maintenance guidance

For proper maintenance, technicians should inspect the water pump during routine belt service. It is recommended to check for signs of coolant leakage from the weep hole or unusual bearing noise. Ensuring a secure fitment and using high-strength components helps prevent premature failure in demanding environments.

Troubleshooting and selection

When performing repairs, verify that all connections and seals are properly seated to maintain system pressure. This part provides a reliable solution for maintaining the cooling efficiency of your fleet's heavy-duty machinery.

OE cross-reference

525.03.0009 (Water Pump Water Pumps) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21781059.